Friction

 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

Tags

NGSS.MS-PS2-1

Which of these does friction produce?

• light

• sound

• heat

• gravity

What direction does friction act relative to motion?

• in the same direction
• in the opposite direction 
• need more information
• depends on the force

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed

The rougher the surface, the faster an object will travel over the surface.

• True
• False

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

When there is friction, the energy of an object's motion is converted into _______ energy

• heat

• kinetic

• stronger

• friction

Tags

NGSS.MS-PS3-5

A puck slides along an icy surface. What makes it slow down?

• It runs out of push
• It rubs against the ice
• It runs out of electricity

Tags

NGSS.MS-PS2-2

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction

What are the 2 types of friction discussed in the video?

• Static and Dynamic Friction

• Kinetic and Static Friction

• Kinetic and Dynamic Friction

• Dynamic and Moving Friction